Automatic floating system and method for automobile and automobile

Abstract

The invention belongs to the field of automobile safety, and discloses an automatic floating system and method for an automobile and the automobile, the automatic floating system comprises a water level sensing device, a controller, an air inlet switch and a buoyancy airbag, the water level sensing device monitors the water level of the automobile in real time, the controller judges the soaking state according to a water level signal and triggers an air inlet signal, and the air inlet switch releases tire pressure; the released air is filled into a buoyancy air bag pre-buried in the hollow-out position of the hub through a connecting channel to provide buoyancy. According to the system, the air bags are filled with tire gas, the floating time is remarkably prolonged, sufficient safety windows are won for personnel escape and rescue, meanwhile, the system is directly integrated to a hub structure, special vehicle body design or expensive materials are not needed, the production cost and modification complexity are greatly reduced, and the system is suitable for large-scale popularization and application. Therefore, the applicability and the generalization performance in common civil vehicles are improved, and the limitations of limited floating time, high cost and difficulty in popularization in the prior art are effectively overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile safety, and in particular relates to an automatic floating system and method for an automobile, and an automobile. Background Art

[0002] With the rapid development of the automotive industry, vehicle safety remains a core concern for consumers. This is especially true when responding to sudden and dangerous situations, where effective safety measures are crucial for occupants. Vehicles falling into water or flooding due to extreme weather conditions such as heavy rain are highly dangerous and sudden, posing a significant threat to the lives of drivers and passengers and causing significant property damage. Ensuring the safe escape of occupants and minimizing vehicle losses in these emergencies is a critical issue currently under investigation in automotive safety technology.

[0003] Currently, existing technologies for emergency response after a vehicle falls into water are significantly limited. Only a few specialized vehicles achieve a certain degree of emergency flotation through specialized body designs and specific manufacturing materials. However, this approach not only maintains a short flotation time, failing to provide sufficient time for evacuation and rescue, but also significantly increases production costs due to the specialized structural and material requirements. This makes widespread adoption and application in civilian vehicles difficult, and fails to meet the public's demand for safety in such emergencies.

[0004] In summary, in the face of the problem of casualties and water damage to vehicles due to the inability to open vehicle doors when the vehicle falls into water or in extreme weather such as heavy rain, existing methods only use special vehicle body structure designs and specific manufacturing materials, which have defects such as limited floating time, high cost, and poor applicability. Summary of the Invention

[0005] The present invention provides an automatic floating system and method for a car, and the car. The floating system requires little modification to the existing car structure, has great safety benefits, and has a good floating effect.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic floating system for a car, comprising: Water level sensor device, used to collect real-time water level signals of the car; The controller is used to receive the water level signal from the water level sensor and determine whether the vehicle is submerged in water based on the water level signal; if it is determined that the vehicle is submerged in water, the controller sends an air intake signal; The air intake switch is connected to the car tire and is used to release the tire pressure according to the air intake signal; The buoyancy airbag is pre-buried and connected to the hollow part of the car wheel hub; the air inlet end of the buoyancy airbag is connected to the car tire, and the gas released by the tire can be filled into the buoyancy airbag to provide buoyancy for the car.

[0007] Furthermore, the air inlet end of the buoyancy airbag is connected to the air outlet of the automobile tire through an airbag pipe; a signal-controlled switch pacing device is also provided on the airbag pipe, and the signal-controlled switch pacing device is used to control the opening and closing of the airbag pipe according to the buoyancy currently exerted on the automobile.

[0008] Furthermore, the signal-controlled switch pacing device includes a float, a reed switch, and a ring magnet; The annular magnet is fixedly connected to the lower part of the float and movably sleeved on the outside of the reed switch; One end of the reed switch is connected to an electric control valve; the electric control valve is arranged on the airbag pipeline and is used to open / close the airbag pipeline; The float can drive the annular magnet to move upward under the action of buoyancy, and the annular magnet and the reed switch generate magnetic attraction, so that the reed switch is in a connected state, thereby achieving conduction of the airbag pipeline.

[0009] Furthermore, the airbag pipe is pre-buried in the wheel axle of the car.

[0010] Furthermore, the buoyancy airbag is pre-buried in the central hollow position of the automobile wheel hub.

[0011] Furthermore, the water level sensor device is installed at the maximum wading line position of the automobile engine or the horizontal position of the automobile door handle.

[0012] Furthermore, each automobile tire is respectively equipped with a water level sensor device and a buoyancy airbag; each water level sensor device is used to monitor the water level signal of the corresponding automobile tire; the automatic floating system for automobile also includes a spirit level, which is connected to a controller; the controller controls the opening and closing of each air intake switch according to the water level signal; the controller adjusts the air intake speed of each buoyancy airbag according to the spirit level parameters collected by the spirit level, so that the automobile is in a balanced state.

[0013] Furthermore, the inflation hole and the air outlet hole of the automobile tire are independently opened, and the air outlet hole is connected to the air inlet switch.

[0014] A control method for an automatic aquatic system for a vehicle, based on the above-mentioned automatic aquatic system for a vehicle, comprises: Collect the real-time water level signal of the car through the water level sensor; The controller receives the water level signal from the water level sensor and determines whether the car is submerged in water according to the water level signal; if the car is submerged in water, an air intake signal is sent; An air intake switch is used to release the tire pressure according to the air intake signal, and the released gas is filled into the buoyancy airbag to realize automatic floating of the car.

[0015] A car, comprising a car body; The above-mentioned automatic floating system for automobile is installed on the automobile body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automatic flotation system for automobiles, comprising a water level sensor, a controller, an air intake switch, and a buoyancy airbag. The water level sensor monitors the vehicle's water level in real time. The controller determines the submergence status based on the water level signal and triggers an air intake signal. The air intake switch releases tire pressure, and the released gas is then pumped into a buoyancy airbag embedded in a hollowed-out portion of the wheel hub through a connecting passageway, providing buoyancy. When the water level rises after the vehicle falls into the water, the system automatically activates, utilizing the existing compressed gas in the tire as an air source to rapidly inflate the airbag, generating additional buoyancy and eliminating the need for an external air source. By reusing tire gas to fill the airbag, this system significantly extends the flotation time, providing a sufficient safety window for evacuation and rescue. Furthermore, the system is directly integrated into the wheel hub structure, eliminating the need for special body design or expensive materials, significantly reducing production costs and modification complexity. This significantly improves the system's applicability and scalability in ordinary civilian vehicles, effectively overcoming the limitations of existing technologies, such as limited flotation time, high costs, and difficulty in scalability.

[0017] The present invention also provides a control method for an automatic floating system for a vehicle. Based on the aforementioned automatic floating system, this method uses a water level sensor to monitor the vehicle's water level in real time. A controller determines the submergence status based on the water level signal and automatically triggers an air intake signal. The air intake switch then releases compressed gas from the tire, filling a buoyancy airbag embedded in the wheel hub. The system achieves rapid response through real-time water level detection. Using the existing compressed gas in the tire as the air source, the airbag rapidly inflates to generate effective buoyancy through a combination of air pressure release and gas transfer mechanisms. This method significantly extends the duration of a vehicle's floating state through automated triggering and tire gas resource reuse, creating a more secure window for occupant escape and external rescue. Furthermore, this method directly reuses the vehicle's existing tire system and wheel hub space, eliminating the need for specialized body structures or expensive materials. This significantly reduces production and modification costs, overcoming the high costs and difficult adoption of traditional technologies. This makes large-scale application of automatic floating functions possible in ordinary civilian vehicles, effectively improving public driving safety.

[0018] The present invention also provides a car that integrates the aforementioned automatic floating system into the car body. The car body is equipped with a water level sensor, a controller, an air intake switch, and a buoyancy airbag embedded in the wheel hub to form a complete functional unit. The water level sensor monitors the environmental status in real time. When the controller determines that the vehicle is submerged in water, it automatically triggers the release of tire gas into the buoyancy airbag. The compressed air in the tire is used to quickly inflate the airbag, forming a stable buoyancy to lift the vehicle body. Without changing the traditional vehicle body structure and materials, the system significantly extends the vehicle's floating time by reusing tire gas resources and wheel hub space, creating a sufficient window for passengers to escape. At the same time, the system does not require special vehicle body craftsmanship or expensive lightweight materials, greatly reducing production costs and modification thresholds. It completely solves the problem of poor applicability of traditional technologies due to high costs and complex structures, enabling ordinary civilian vehicles to widely possess efficient and reliable emergency protection capabilities for falling into water, effectively meeting the public's safety needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an automatic floating system for a vehicle provided by an embodiment of the present invention; Figure 2 A schematic diagram of the connections between the components of an automatic aquatic system for a vehicle provided by an embodiment of the present invention; Figure 3 An assembly diagram of a buoyancy airbag provided in an embodiment of the present invention; Figure 4 A schematic diagram of the connection between the buoyancy airbag and the tire provided in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of a signal-controlled switch pacing device provided in an embodiment of the present invention; wherein (a) is the disconnected state; (b) is the connected state.

[0020] Reference numerals: 1. Water level sensor; 2. Wireless water level sensor line; 3. Buoyancy airbag; 4. Airbag pipe; 5. Air inlet switch; 6. Float; 7. Reed switch; 8. Ring magnet. DETAILED DESCRIPTION

[0021] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0022] This embodiment provides an automatic floating system for a car, including a water level sensor 1, a controller, an air intake switch 5 and a buoyancy airbag 3; the water level sensor 1 is used to collect real-time water level signals from the car; the controller is used to receive the water level signal from the water level sensor 1 and determine whether the car is submerged based on the water level signal; if the car is determined to be submerged, an air intake signal is sent; the air intake switch 5 is connected to the car tire and is used to release the tire pressure based on the air intake signal; the buoyancy airbag 3 is pre-buried and connected to the hollow part of the car wheel hub; the air intake end of the buoyancy airbag 3 is connected to the car tire and can fill the gas released by the tire into the buoyancy airbag 3 to provide buoyancy for the car.

[0023] The design principle of this embodiment is as follows: first calculate the total weight of the vehicle to match the airbag size, and pre-embed the airbag into the center position of the four wheels of the vehicle; The formula for calculating air buoyancy is the same as that for calculating liquid buoyancy, both based on Archimedes' principle. This principle states that any object in a fluid (whether liquid or gas) experiences an upward buoyant force equal to the weight of the fluid displaced by the object. For example, a vehicle weighing 1800 kg has a volume equivalent to approximately 1.8 cubic meters in water. An average of 0.45 cubic meters of airbag capacity per wheel is sufficient for buoyancy. For example, the pressure inside a car's tire is typically 2.5 Pa. A single tire can be filled with 0.18 cubic meters of air, which, upon release, allows the vehicle to float in water.

[0024] The test system provided in this embodiment is further described below with reference to the accompanying drawings: like Figure 1 As shown, this embodiment provides an automatic floating system for automobiles, including a water level sensing device 1; wherein, in order to accurately monitor the submerged state of the vehicle, the water level sensing device 1 is installed at the maximum wading line position of the automobile engine or the horizontal position of the automobile door handle (new energy vehicles). Taking a common family car as an example, the maximum wading line of the engine is usually located at the bottom of the vehicle near the engine compartment, about 30-40 cm above the ground. The water level sensing device 1 is installed at this position, using a waterproof ultrasonic sensor, and its sensing range can be set to 0-80 cm according to the actual wading requirements of the vehicle. The sensor is connected to the vehicle through a dedicated waterproof wiring harness or wirelessly, for example Figure 1 The water level wireless sensor line 2 is connected to the controller inside the vehicle to ensure stable signal transmission.

[0025] In this embodiment, if the water level sensor is installed horizontally on a vehicle door handle, for example, a four-door sedan, a suitably sized mounting hole is created inside the door trim panel below each door handle. A miniaturized water level sensor 1 (e.g., a capacitive water level sensor) is embedded and installed, connected to the controller using the existing wiring harness inside the door. This installation method not only effectively monitors the water level on the side of the vehicle, but also avoids misjudgments of the water level due to vehicle tilt, improving comprehensive monitoring.

[0026] In this embodiment, the inflation hole and the exhaust hole are independently provided for the automobile tire. For example, on a certain SUV tire, an exhaust hole is drilled using a special process on the side of the tire near the wheel hub. The exhaust hole has a diameter of 8-10 mm, ensuring smooth gas discharge without affecting the tire's structural strength.

[0027] like Figure 3 and Figure 4 As shown, in this embodiment, the buoyancy bladder 3 is pre-embedded and connected to the hollowed-out portion of the vehicle wheel hub. Taking a five-spoke aluminum alloy wheel as an example, a dedicated bladder mounting slot is designed within the hollowed-out portion at the center of the hub. The slot dimensions are customized to the deployed dimensions of the buoyancy bladder 3, ensuring that the buoyancy bladder 3 does not affect the dynamic balance of the wheel hub after installation. The buoyancy bladder 3 is made of a high-strength, lightweight rubber material and is compact when folded, fitting snugly into the mounting slot.

[0028] The air inlet of the buoyancy airbag 3 is connected to the tire's air outlet via an airbag duct 4. This duct 4 is pre-buried in the vehicle's wheel axle and constructed from a steel pipe lined with a high-pressure, corrosion-resistant rubber lining. A groove is pre-machined into the wheel axle to accommodate the airbag duct 4. After the duct is installed, it is sealed with sealant to prevent the ingress of water and impurities. A rotary seal joint is used at the connection between the wheel axle and the wheel hub to ensure the airbag duct 4 remains sealed even when the wheel rotates, while also ensuring smooth gas transmission.

[0029] like Figure 5 As shown, specifically Figure 5As shown in (a) and (b), in this embodiment, in order to improve the dynamic balancing effect of the automatic floating vehicle, a signal control switch pacing device is installed between the airbag pipe 4 and the tire outlet end, specifically including a float 6, a reed switch 7 and an annular magnet 8. A waterproof float mounting seat is installed at a position near the buoyancy airbag 3 on the airbag pipe 4. The float 6 has a diameter of 5-8 cm and is made of a lightweight, high-strength plastic material. The interior is a hollow structure with good buoyancy. The float 6 is connected to the reed switch 7 through a stainless steel connecting rod, and the annular magnet 8 is fixedly connected to the bottom of the interior of the float 6. The annular magnet 8 is mounted on the outside of the reed switch 7 and maintains a certain distance from the reed switch 7. When the float 6 moves upward under the action of buoyancy, the reed switch 7 can produce a magnetic attraction with the annular magnet 8; Figure 5 In (a), when no water-fall detection signal is received, the reed switch 7 is in a disconnected state and the tire air vent is closed; Figure 5 In (b), upon receiving a water fall detection signal, reed switch 7 is connected, pushing the tire air vent open. One end of reed switch 7 is connected to an electrically controlled valve, which is located on airbag duct 4 and is used to open and close airbag duct 4. The electrically controlled valve is a normally closed solenoid valve. When reed switch 7 and annular magnet 8 engage, the contacts within reed switch 7 close, triggering the electrically controlled valve to open, opening airbag duct 4 and allowing the gas in the tire to fill buoyancy airbag 3. When the buoyancy acting on the vehicle decreases, float 6 descends, reed switch 7 separates from annular magnet 8, the electrically controlled valve closes, closing airbag duct 4 and ceasing inflation of buoyancy airbag 3.

[0030] For example, the air inlet switch 5 can also be integrated with the signal control switch pacing device, thereby simplifying the overall structural design and realizing the conduction and closing of the airbag tube 4.

[0031] Based on the above automatic floating system, this embodiment further provides a control method for the automatic floating system for a vehicle, specifically comprising: Real-time monitoring process: The vehicle's real-time water level signal is collected through the water level sensor 1. For example, an ultrasonic water level sensor installed at the engine's maximum water level line transmits a water level signal to the controller every 50-100 milliseconds. After receiving the water level signal from the water level sensor 1, the controller first filters the signal to remove noise. Using a sliding average filter algorithm, 10 consecutive water level data points are averaged to obtain a relatively stable water level value.

[0032] Flooding Status Detection: Based on the filtered water level signal, the controller determines whether the vehicle is submerged. If the water level exceeds a preset threshold (e.g., the engine's maximum wading height plus a 10-20 cm safety margin), the vehicle is deemed submerged and the controller immediately sends an air intake signal. Simultaneously, the controller displays this information to the driver on the onboard display and sounds an alarm, alerting them to the danger.

[0033] Air Intake Switch Response: Air intake switch 5 releases tire pressure based on the air intake signal. Upon receiving the air intake signal from the controller, air intake switch 5 rapidly opens its valve, allowing compressed air in the tire to flow through airbag conduit 4 to buoyancy bag 3. For example, assuming an initial tire pressure of 2.5-3.0 kPa, within one to two minutes of opening air intake switch 5, the tire pressure gradually decreases, and buoyancy bag 3 begins to inflate.

[0034] The buoyancy airbag inflation process: As the tire fills with gas, the buoyancy airbag 3 gradually deploys. During the inflation process, a signal-controlled switch pacing device controls the opening and closing of the airbag conduit 4 based on the vehicle's current buoyancy. As the buoyancy airbag 3 inflates, the vehicle's buoyancy gradually increases. The float 6 moves upward under the action of this buoyancy, causing the reed switch 7 to engage the annular magnet 8. This opens the electrically controlled valve, keeps the airbag conduit 4 open, and continues to inflate the buoyancy airbag 3. When the vehicle's buoyancy reaches a certain level, the float 6 rises to a higher position. To prevent overinflation of the buoyancy airbag 3, the reed switch 7 separates from the annular magnet 8, closing the electrically controlled valve and pausing the airbag conduit 4. This dynamic control ensures that the buoyancy airbag 3 provides sufficient buoyancy to keep the vehicle afloat while also preventing safety hazards caused by overinflation.

[0035] Exemplarily, this buoyancy system also includes multi-sensor collaborative monitoring: Each vehicle tire is equipped with a corresponding water level sensor 1 and a buoyancy airbag 3. Each water level sensor 1 is used to monitor the water level signal of the corresponding vehicle tire. The vehicle is also equipped with a spirit level connected to a controller. For example, an electronic spirit level equipped with an accelerometer and gyroscope collects real-time vehicle horizontal posture data, including the vehicle's tilt angle and pitch angle. The controller comprehensively determines the vehicle's submergence and posture based on the water level signals collected by each water level sensor 1 and the spirit level parameters collected by the spirit level.

[0036] Intake speed adjustment process: Figure 2As shown, the controller adjusts the air intake speed of each buoyancy airbag 3 based on the judgment result to keep the vehicle in a balanced state. If the water level at the vehicle's left tire is high, causing the vehicle to tilt to the left, the controller sends a command to the air intake switch 5 corresponding to the left tire via the water level wireless sensor line 2, appropriately increasing the air intake speed, causing the left buoyancy airbag 3 to inflate faster, increasing the buoyancy on the left side, and thus adjusting the vehicle's posture and gradually restoring balance. If the water level at the vehicle's right tire is low, the controller reduces the air intake speed of the air intake switch 5 corresponding to the right tire, slowing the inflation of the right buoyancy airbag 3 and preventing the vehicle from tilting excessively to the right. This precise dynamic adjustment ensures that the vehicle maintains a stable balance during the floating process, improving vehicle safety and the escape probability of the driver and passengers.

[0037] Exemplarily, this embodiment further provides a car including an automatic floating system for the car, and the specific structural assembly process is as follows: System Integration Process: During the vehicle's production and assembly process, the automatic buoyancy system is integrated with the vehicle's other systems. First, the airbag duct 4 is pre-embedded in the wheel axle. During wheel hub installation, the buoyancy airbag 3 is pre-installed in the wheel hub's hollowed-out area, ensuring a secure connection between the airbag duct 4 and the air inlet end of the buoyancy airbag 3.

[0038] Electrical System Connection: During the vehicle electrical system wiring, connect the wiring harnesses for components such as the water level sensor 1, level gauge, air intake switch 5, and the electronically controlled valve in the signal control switch pacing device to the vehicle's controller. Ensure the wiring harnesses are properly connected and secure, and ensure they are waterproof and insulated. Wireless communication between each component and the controller facilitates data transmission and control command transmission. During the vehicle interior installation phase, connect the onboard display to the controller to display the vehicle's submersion status, floating status, and various parameter information.

[0039] Quality Inspection: After vehicle assembly is complete, the automatic flotation system undergoes a comprehensive quality inspection. First, a static inspection checks the secure installation of components, the correct wiring connections, and the functioning of sensors. Next, a dynamic simulation test simulates a vehicle submersion scenario to test the system's trigger response time, the accuracy of the air intake switch, the effectiveness of the buoyancy airbag inflation, and the proper functioning of the vehicle's balance adjustment function. Only after the automatic flotation system passes all quality inspections can the vehicle enter the next production stage or be delivered to the user.

[0040] For example, the automatic floating system for automobiles provided in this embodiment is put into practical use, and the specific implementation process is as follows: Example 1: During a rainstorm in a city, severe flooding of roads occurs. A car equipped with an automatic flotation system is driving through a flooded section of road. When the vehicle reaches an area with deep water, the water level sensor 1 detects the rising water level in real time and transmits a water level signal to a controller. Upon determining that the vehicle is submerged, the controller immediately sends an air intake signal, opening the air intake switch 5, releasing tire pressure, and filling the buoyancy airbags 3. As the buoyancy airbags 3 inflate, the vehicle gradually floats. At this point, the spirit level detects that the vehicle is tilting due to uneven water depth. Based on the spirit level parameters and the water level signals from each tire, the controller adjusts the air intake rate of each buoyancy airbag 3 to maintain vehicle balance. The driver can view the vehicle's flotation status and various parameters on the onboard display screen and, using the vehicle's remaining power, slowly steer the vehicle away from the danger zone, preventing it from being submerged and people from being trapped.

[0041] Example 2: When a vehicle encounters a river or flooded road while driving in the wild, the driver activates the vehicle's wading mode in advance (if the vehicle has this feature, the system response can be further optimized). Once the vehicle enters the water, the automatic flotation system begins operating. A water level sensor 1 monitors the water level in real time, and a controller determines whether to trigger the flotation function based on the water level signal and the vehicle's posture. If the vehicle accidentally sinks into deeper water while wading, the automatic flotation system quickly activates, inflating the buoyancy airbags 3 to buoy the vehicle. During the flotation process, the system uses a spirit level and the water level sensors 1 located on each tire to adjust the air intake rate of each buoyancy airbag 3 in real time, ensuring the vehicle maintains a stable posture in the water. The driver can use the vehicle's steering and powertrain to safely maneuver the vehicle slowly through the flooded area, preventing the vehicle from stalling or becoming trapped in complex waters outdoors, providing reliable safety for drivers and passengers.

[0042] It can be seen that this embodiment combines the tire pressure element with the floating airbag device, does not require an additional air tank device for the vehicle, does not require high cost investment, has a simple principle and simple control, and provides an effective solution to prevent the vehicle from sinking after falling into the water.

[0043] In summary, the present invention provides an automatic aquatic system, method, and vehicle for a vehicle, which have the following advantages over traditional aquatic technologies for vehicles: This system achieves automatic flotation by innovatively reusing existing vehicle resources: a water-level sensor monitors flooding risk in real time, and a controller triggers an air intake switch to release compressed air from the tire, which then fills a pre-embedded buoyancy bladder within the wheel hub. Its core advantages lie in three key breakthroughs: First, the system utilizes tire air as a stable air source, continuously inflating the bladder to generate strong buoyancy, significantly extending the vehicle's afloat time and creating a sufficient window for rescue. Second, the system is directly integrated into existing spaces such as the wheel hub and axle, eliminating the need for specialized bodywork or expensive lightweight materials, significantly reducing production and modification costs. Finally, its pre-embedded design maintains the vehicle's original structure. Independent air vents, buoyancy sensors, and a coordinated multi-bladder mechanism ensure compatibility between daily safety and emergency functions, while dynamic leveling technology with a spirit level enhances stability in complex environments. Ultimately, with its low cost, high reliability, and widespread availability, it completely overcomes the fundamental limitations of traditional technologies, such as short flotation time, high cost, and poor applicability, making effective water emergency response capabilities widely available to civilian vehicles.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. An automatic floating system for a car, characterized in that: include: A water level sensor (1) for collecting real-time water level signals of a vehicle; A controller is used to receive a water level signal from a water level sensor (1), and to determine whether the vehicle is submerged in water based on the water level signal; if the vehicle is submerged in water, an air intake signal is sent; An air intake switch (5), connected to the tire of the vehicle, for releasing the tire pressure according to the air intake signal; The buoyancy airbag (3) is pre-buried and connected to the hollow portion of the automobile wheel hub; the air inlet end of the buoyancy airbag (3) is connected to the automobile tire, and the gas released by the tire can be filled into the buoyancy airbag (3) to provide buoyancy for the automobile.

2. The automatic floating system for automobile according to claim 1, characterized in that: The air inlet end of the buoyancy airbag (3) is connected to the air outlet of the automobile tire through an airbag pipe (4); a signal control switch pacing device is also provided on the airbag pipe (4), and the signal control switch pacing device is used to control the opening and closing of the airbag pipe (4) according to the buoyancy currently exerted on the automobile.

3. The automatic floating system for automobile according to claim 2, characterized in that: The signal-controlled switch pacing device comprises a float (6), a reed switch (7) and a ring magnet (8); The annular magnet (8) is fixedly connected to the lower part of the float (6) and is movably sleeved on the outside of the reed switch (7); One end of the reed switch (7) is connected to an electric control valve; the electric control valve is arranged on the airbag pipe (4) and is used to open / close the airbag pipe (4); The float (6) can drive the annular magnet (8) to move upward under the action of buoyancy, and the annular magnet (8) and the reed switch (7) generate a magnetic attraction, so that the reed switch (7) is in a connected state, thereby achieving conduction of the airbag pipe (4).

4. The automatic floating system for automobile according to claim 2, characterized in that: The airbag pipe (4) is pre-buried in the wheel axle of the car.

5. An automatic floating system for automobile according to claim 1 or 4, characterized in that: The buoyancy airbag (3) is pre-buried in the central hollow position of the automobile wheel hub.

6. The automatic floating system for automobile according to claim 1, characterized in that: The water level sensor (1) is installed at the maximum wading line position of the automobile engine or at the horizontal position of the automobile door handle.

7. The automatic floating system for automobile according to claim 1, characterized in that: Each automobile tire is respectively equipped with a water level sensing device (1) and a buoyancy airbag (3); each water level sensing device (1) is used to monitor the water level signal of the corresponding automobile tire; the automobile automatic floating system also includes a spirit level, which is connected to a controller; the controller controls the opening and closing of each air intake switch (5) according to the water level signal; the controller adjusts the air intake speed of each buoyancy airbag (3) according to the spirit level parameters collected by the spirit level, so that the automobile is in a balanced state.

8. The automatic floating system for automobile according to claim 1, characterized in that: The inflation hole and the air outlet of the automobile tire are independently provided, and the air outlet is connected to the air inlet switch (5).

9. A control method for an automatic aquatic system for a vehicle, based on the automatic aquatic system for a vehicle according to any one of claims 1 to 8, characterized in that: include: Collecting a real-time water level signal of the vehicle through a water level sensor device (1); A controller is used to receive a water level signal from a water level sensor (1), and to determine whether the vehicle is submerged in water based on the water level signal; if the vehicle is submerged in water, an air intake signal is sent; An air intake switch (5) is used to release the tire pressure according to an air intake signal, and the released gas is filled into the buoyancy airbag (3) to realize automatic floating of the car.

10. An automobile, characterized in that: Including the car body; The automobile body is equipped with the automatic floating system for automobile according to any one of claims 1 to 8.

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